Reliable Multi-Hop Linear Network Based on LoRa

Duong, Cong-Tan; Kim, Myung-Kyun

doi:10.14257/ijca.2018.11.4.13

Cited by 13 publications

(18 citation statements)

References 4 publications

(4 reference statements)

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“…LoRa transceivers can transmit packets more than 10 km; however, in some special environments, it requires a multi-hop communication such as an underground tunnel. There are some existing LoRa protocols, such as LoRaWAN [6], LoRa Blink [7], the Multi-hop LoRa linear protocol [8], that use the LoRa technique. They present with some disadvantages, such as high latency and low reliability.…”

Section: Introductionmentioning

confidence: 99%

“…Some studies work on improving high reliability and low latency of multi-hop network, such as DeAMON [9], DiSCA [10], PC-LLF [11], CLLF [12], SCSMA [13], SSMADBTC [14], DEDAS-MC [15,16], Multi-hop LoRa linear protocol [8]:…”

Section: Introductionmentioning

confidence: 99%

“…The Multi-hop LoRa linear protocol [8] is of high reliability. However, it shows high latency because the number of timeslots in the slot frame in the data transmission equals the number of deployed nodes.…”

mentioning

confidence: 99%

“…There are some existing protocols in LoRa communication such as LoRaBlink [7], LoRaWAN [6], DQ-LoRa [19] and the Multi-hop LoRa linear protocol [8]:…”

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confidence: 99%

“…The Multi-hop LoRa linear protocol [8] has a slot frame length equal to the number of deployed nodes in the data transmission period. Every node transmits a packet with a different timeslot.…”

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confidence: 99%

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Multi-Hop LoRa Network Protocol with Minimized Latency

Loc

Kim

2020

Energies

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LoRa (Long Range) is a long-range communications capacity with chirp spread spectrum modulation. It has been developed for Internet of Things (IoT) applications for long-distance and low power consumption. Some authors proposed LoRa protocols such as LoRaWAN, LoRaBlink, DQ-LoRa and the multi-hop LoRa network with linear topology; however, these protocols have disadvantages. In this paper, we propose a minimized latency multi-hop LoRa network protocol that is collision-free with low latency to improve on the disadvantages. First, in the proposed protocol, tree topology is constructed by exchanging packets between LoRa nodes and the sink node. During this period, a timeslot and channel are assigned to each tree link, over which LoRa nodes communicate with their parent node and which is collision-free with its neighbor nodes. After the tree construction period, LoRa nodes start data transmission using the timeslot and channel that they have already been assigned to in the tree construction period. We developed the proposed protocol in a LoRa node prototype using the MultiTech mDot module, and we conducted experiments at Ulsan University. The results show that the proposed protocol provides high reliability, parallel transmissions, a minimized number of timeslots assigned for all the links in the network, a minimized packet size, and low latency.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

“…There are some existing protocols in LoRa communication such as LoRaBlink [7], LoRaWAN [6], DQ-LoRa [19] and the Multi-hop LoRa linear protocol [8]:…”

mentioning

confidence: 99%

mentioning

confidence: 99%

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